/*
 * Copyright 2018 Qunar, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package qunar.tc.qmq.producer.tx;

import qunar.tc.qmq.MessageStore;
import qunar.tc.qmq.ProduceMessage;
import qunar.tc.qmq.TransactionListener;
import qunar.tc.qmq.TransactionProvider;

/**
 * Created by zhaohui.yu
 * 10/29/16
 */
public class MessageTracker {

    private final TransactionProvider transactionProvider;

    private final TransactionListener transactionListener;

    public MessageTracker(TransactionProvider transactionProvider) {
        this.transactionProvider = transactionProvider;
        this.transactionListener = new DefaultTransactionListener();
    }

    public boolean trackInTransaction(ProduceMessage message) {
        MessageStore messageStore = this.transactionProvider.messageStore();
        message.setStore(messageStore);
        if (transactionProvider.isInTransaction()) {
            this.transactionListener.beginTransaction(messageStore);
            this.transactionProvider.setTransactionListener(transactionListener);
            messageStore.beginTransaction();
            this.transactionListener.addMessage(message);
            return true;
        } else {
            try {
                message.save();
            } catch (Exception e) {
                message.getBase().setStoreAtFailed(true);
            }
            return false;
        }
    }
}
